Answer: option C (pentane)
explanation:
Isomers are such organic molecules that have the same molecular formula but different structural formulas.
the above structure has 5 carbons, so the alkane that is supposed to be its isomer must have 5 carbons Atwell, as isomers have the same molecular formula.
the alkane with 5 carbons is pentane.
the above structure has the formula C5H12.
and the formula of pentane is C5H12 aswell.
others are wrong options as methane is CH4, butane is C4H10, and hexane is C6H14.
